To go back to the subject - i have come across the pictures of an interesting variant - POW(?) / Regular Army (?) + usual questions; origin, manufacturer, period etc - remain!

Be very careful with trench art Many of the "POW eagles" are fakes.
On another subject. Those who wish to support Związek Żołnierzy Narodowych Sił Zbrojnych may be interested in Kalendarz "Chwała Bohaterom"